Attachment 145373 Details for Bug 111250 – Experimental patch to check if this is a race condition when USB dock is plugged

[patch] Experimental patch to check if this is a race condition when USB dock is plugged

v1-0001-drm-Give-more-chance-to-dp-aux-to-establish-conne.patch (text/plain), 996 bytes, created by Stanislav Lisovskiy on 2019-09-16 11:55:04 UTC

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Creator: Stanislav Lisovskiy

Created: 2019-09-16 11:55:04 UTC

Size: 996 bytes

patch

obsolete

>From c00946f6d60f52d38ab9d04c4b0c14509faf7fc2 Mon Sep 17 00:00:00 2001
>From: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
>Date: Mon, 16 Sep 2019 14:48:55 +0300
>Subject: [PATCH v1] drm: Give more chance to dp aux to establish connection.
>
>Experimental patch, not for drm-tip.
>---
> drivers/gpu/drm/drm_dp_helper.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
>index ffc68d305afe..e99bdeefcb13 100644
>--- a/drivers/gpu/drm/drm_dp_helper.c
>+++ b/drivers/gpu/drm/drm_dp_helper.c
>@@ -213,7 +213,7 @@ static int drm_dp_dpcd_access(struct drm_dp_aux *aux, u8 request,
> 	 * aux i2c transactions but real world devices this wasn't
> 	 * sufficient, bump to 32 which makes Dell 4k monitors happier.
> 	 */
>-	for (retry = 0; retry < 32; retry++) {
>+	for (retry = 0; retry < 64; retry++) {
> 		if (ret != 0 && ret != -ETIMEDOUT) {
> 			usleep_range(AUX_RETRY_INTERVAL,
> 				     AUX_RETRY_INTERVAL + 100);
>-- 
>2.17.1
>

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Attachments on bug 111250: 144909 | 144956 | 145204 | 145205 | 145279 | 145373 | 145392 | 145393 | 145394

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